Gelatin-Silver
prints have a deep, bright range of grays and deep,
dark blue-blacks. The surface can be matt or glossy.
Silver mirroring is characteristic of late 19th and
early 20th century prints. Chemical residue from
the developing process generally causes fading, loss
of detail in the highlights, and in some cases yellow/browning
of the print. Sepia toned prints from the early 1900s
display less mirroring.

It
is best to separate photographic prints from negatives.
However, compromise between what is ideal and what
is feasible must be made. Place acid-free sheets of
paper between each print if more than one print is
housed in a folder. House similar sized items together.
Acid-free boxes add additional protection for photographic
collections. Atmospheric pollutants, chiefly pollutants
that may attract mold or insects, in addition to light,
heat, and humidity can cause print deterioration.

Store
in a cool, dry dark area where temperature and humidity
do not fluctuate. Ideal conditions are 65° -
68° F and 40%-50% RH.